Message-register system



F. AVERY.

, MESSAGE REGISTER SYSTEM.

APPLICATION FILED JUNE 4, 1920.

1,409,91 3 Patented Mar. 21, 1922.

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UNITED STATES PATENT OFFICE.

FREDERICK AVERY, 0F NEVI YORK. N.

MESSAGE-REGISTER SYSTEM.

Application filed .Tune 4, 1920.

To all LU/7mm it Wir/.7j concern.'

Be it known that I, Fnrionnroii Amar, residing at N ew `York, in the county ot New York and State of New York, have invented certain improvements in lVIessage-Register Systems, of' which the following is a specification.

' This invention relates to message register systems 'tor telephone exchanges, and more particularly to message register systems for use in telephone exchanges employing party line working wherein each of the stations of the party line is provided atthe central oilice with a message register for registering calls.

An object of the invention is to provide an improved circuit arrangement in systenis of this nature Ytor selectivelyT associating with the calling station of a party line, the message register individual thereto and for subsequently operating'said register.

In accordance with this invention a party line having two substationsA thereon fand terminating ina non-numerical'.switch in an automatic exchange is provided `with a line relay -for each of thestations connected to the line. The contacts Yof the switch hook at the substation, actuated in response to the removal et the receiver, are arranged so as to cause the energization of the relay individual to the .calling station. The line relay corresponding to the calling station in operating shunts the other line relay connected to the calling line. Theline relays control the actuation ot a switching relay which in turn controls the inclusion of the` register correspondingoto the callingv sta tion, in the message register operatingcircuit. Upon theresponse of the called subscriber the message register is operated.

Other features oit the invention will be-MVV come apparent from a consideration ot the :following description and the appended claims.

Referring to the drawing, only as n'uif'h ot a telephone exchange system as is necessary for a comprehension of the invention, two substations and B aie shown connected a central office. A non-numerical switch D may be employed. 'for extending the line to a connector switch, diagi'a-mmatically represented as E and thence to a vcalled substation C. Line relays 2O and 2l individual to, stations A and B respectively control the actuation of aswitching relay 22. When -Specification of Letters Patent.

which shows to a line l, 2 extending to Patented Mar. 21, 192.2.

`rsemi No. 386,640.

relay 2O operates,

in response to the initiation of a call by the stationA, relay`22 is operated thereby includingvmessage register or meter 2.4i in the message registeroperating circuit whereas when relay 2l op'- crates, in response to the initiation of a call from a subscriber at station B, relay 22 does not operate thereby including message register or meter 25 in the message register operatingl circuit.

rihe non-numerical switch D may be of the type similar to that disclosed in application of Forsberg and de Vignier, Serial No. 317,126, filed August 13, 1919, and the connector switch diagrammatically represented as E, a portion only of which is shown in the drawing, may be ofany wellknown type of step-by-step switch adapted to be operated under the'control. of an'im- Y. V

A Von the party line l, 2 wishes to'hold conversation withthe subscriber at substation C. For simplicity, the called line `isjshown as an ordinary single substation line `not equipped with a message register. VlVhen the subscriber at substation A removeshis receiver from the switch hook 3, the switch hoolr in moving upwardly closes contacts 4t and 5 appreeiably beforeit closes con-V tacts 5 and 6 whereupon relay 2O is energized over a path which may be traced from ground, throughv ringer 7, secondary winding of induction coil 4land 5, primary winding ot induction coil 8,3scnder S1, conductor 2, outer left-hand normal contactsV of relay 23, and winding ot relay 20 to grounded battery. Relay 20rin attracting its right-hand armature completesY a shunt circuit around the winding of line relay 21' individual to substation P so that when contacts 4, 5 and 6 are closed and ground is connected to conductor 1, relay 2l-will not be operated. At the letthand contacts of relay 20, a circuit is closed for relay 22 lwhich thereupon energizes.` Relay 22 in attracting its rightliand armature inchicles message register 24C, individual to the substation Ain the message register operating circuit, and in attracting itsll'et-hand armature completes a circuit for motor inagnet 26, said circuit extending from ground, through ,the winding of magnet 26, brush 8, receiver 10, contacts y so . contacts and winding of relay 22 and `arma- 30, conta-ct 31, left-hand armature and front contact oit relay 22, left-hand winding or'.

be busy, no potential will be present on the test contact or' switch D and magnet 26, being'seltinterrupting, will continue to opcrate to move the set of brushes ot switch D over its associated contacts over a circuit .traceable from ground, winding of magnet 26, brushf30, segment 32, back Vcontact and outer right-hand `armature of relay 23, and

i armature and back contact of magnetg26 to grounded battery.

hen the terminals of an idle switch shown as E, are reached,` ground will be present, onthe testterminal which will cause relay 23 to be operated.` Thecircuit `for the energization oit relay 23 may be traced from ground, Vleft-hand normal contact or slowtofreleaselrelay 28, terminal 35, brush 36, right-hand `winding ot relayf23, left-hand ture and@ back contact #of magnet` 26 to grounded battery'. Relay "23 in operating extends conductors 1, 2V of they calling line through tothe switch E, opensjtheoperating circuit of magnet 26 and `disconnects the line relays 20 and 21from theconductors 1, 2. When relay23 operates and the conductors l, 2 are extended through to the switch E, impulse relay 27 otswitch E operates over a circuit traceable from grounded i Y battery, through the right-hand winding of relay 27, terminal 42, brush 44, outer letthand alternate contacts ofrelay 23, conductor 2, sender S1, prnnary winding of induction coil 8, contacts 5 andf, transmitter` 11, conductor 1, inner left-hand alternate contacts otrelay 23brusli 45, terminal e3 and left-handwnding of relay 27 to ground.

Ringer 7 has a windlng-ot.lngheresistance' andonly a portion of the ,current flowing' throughcontacts 5 and 6 branches oil' at contact f1 and `flows: througlithe receiver 10,

secondary winding of coil8 and ringer 7 to ,f ifiound.` `Relay 27, in operating,`completes a circuit at its armature and front contact for slow-to-release relay28.` Relay 28, in

operating, removes ground from terminal 35 thereby rendering said terminal busy.` Ref.

lay 23, in operating, completes a locking circuit for itself which extends from ground,

through the leftdiand Vwindingof relay 23, inner right handvarmature and front` contaetof relay 23, right-hand alternate contacts of relay 22, winding of relay 22, winding of register 24, brush 38, terminal 39, front contact and rightshand arma-ture of relay 28 and resistance 51 to grounded` battery. Relay 22`is `also maintained energized over the circuit justtraced. Due to the resistance 51,` the flow of current over this circuit is insullicient to operate register 2er.

The subscriber may now proceed to send out impulses to, set the connector on the tei ininalsV-of the called substation whereupon the called subscriber will be signaled in the well-known manner.

lVlien the called subscriber responds, re-

lay 29 will be energized over a circuit eX- Atending from ground, left-hand winding of relay 29, brush 60, terminal 61, through the loop of substation C, terminal 63, brush 62, and right-hand winding of Arelay 29 to grounded battery. Relay 29, in operating, shunts resistance 51 thereby operating the message register 211 over a circuit traceable from groundedbattery, iront contact and armature of relay 29, terminal 39, brush 36, winding of register 2li, right-hand winding and rightdiand alternate contacts of relay 22, front contact and inner riglit-l'iand armature of relay 23, and ,lett-hand winding oi relay 23 to ground. Relays 22 and 23 are then held loclredcunder control of relays 2S lIlCl Y v v i Upon completion of the conversation and restoration `of the receiver tothe switch hook by the subscribers at stations .A and C, relays27 and 29 will deener ize.4 Relay 28 in retracting its [armature w env relay -27 re` leases, 'and relay 29 in releasing open the holding circuit for relays 22andrelay'23 and the `latter in deenergizing'completes a circuit -for stepping magnet 26 extending from ground, through the winding or magnet 26, brush 30segm'ent 32, outer righthand normal contacts ofrelay 23and arma ture andA back Vcontact of magnet 26 to grounded battery. Under the control of magnet 26 the brushes of switch D are stepped to normal whereupon the operating circuit for magnet26 is interrupted.V The deenergization of the impulse relay 27 may cause the restoration to normal oi" switch E in the usual manner and the system is then ready for the next call.

Assuming now that station apparatus atstation A.V The circuit for relay 2,1 includes Vgrounded battery, lefthand winding of relay 21, lett-hand inner normal contacts of relaya23, conductor 1,

,primary windingo'l'induction coil 8, contacts 5` and 4, receiver 10secondary wind- B initiates a call, line relay I21 will operate'and shunt ing ot induction coil 8, and ringer 'l' to ground. Relay 21 also completes a circuit at its right-hand contacts or magnet 26, said circuit extending from ground, Winding of magnet 26, brush 30, normal contact 3l, right-hand armature and front contact and right-hand winding of relay 2l, and armature and back contact of magnet 26 to grounded battery. Magnet 26 in operating moves the brushes of switch D one step. As long as brush 36 engages the terminals ot busy trunlrs, no potential will be vpresent on the test terminals engaged by brush 36 and magnet 26 will continue to operate over a circuit traceable from ground, through the winding of magnet 26, brush 30, segment 32, outer right-hand normal contacts of relay 23 and armature and back contact of magnet 26 to grounded battery.

Then the terminals ot' an idle switch, such as l), are reached, ground will be present on the terminal and relay 23 will operate over a circuit extending from ground, lett-hand armature and back contact o'l1 relay 28, terminal 35, brush 36, right-hand winding ot relay 23, rightliand contacts and winding of rela-y 2l, and armature and back contact of magnet 26 to grounded battery. Relay 23V in operating eX- tends the called line through to the connector switch E and relay 2T operates over a circuit similarto that previously traced whereupon relay 28operates. Inl energizing. relay 23 completes a locking circuit for itsclt, said circuit-extending from ground, lett-hand winding ofrelay 23, inner righthand alternate contacts ot relay 253, righthand normal contacts ot relay 22,-winding et' register 25. brush 3S, terminal 39, front contact and right-hand armature of relay 2S, and resistance 5l to grounded battery. Register 25 will not operate in series with resistance 5l.

The subscriber may now actuate thc impulse sender to set the switch upon the terminals of the desired line in the manner well-known after which the subscriber C may be signaled.

Upon the response of the called subscriber` relay 29 operates over a circuit previously described and at its armature completes a shunt circuit around resistance 5l. whereupon the register 25 operates over a circuit extending vfrom grounded battery, front contact and armature of relay 29, terminal 39, brush 38, winding ot register 25, right-hand normal contacts of relay 22, front contact and inner right-hand armature of relay 2B, and left-hand winding of relay 23 to ground. Relay 23 is then held locked under control of relays 28 and 29.

Upon completion of conversation and restoration of the receivers to the switch hooks at stations B and C, relays 27 and 29 deenergize whereupon the connector switch E known. Relay 27 in releasing,

of the line, means responsiveto the initia-v tion ot a call from one ot said stations `for actuating the line relay corresponding thereto, a switching device controlled by said line relay for including the meter corresponding to the calling line inthe metering circuit, and means for thereafter closing said meter circuit to actuate said meter.

2. In a telephone system, a telephone line, a plurality of stations thereon, a meter for each station of the line, a circuit for operating the meters, a line relay for each station of the line, means responsive to the initiation of a call from one of said stations for actuating the line relay corresponding thereto, a relay controlled by said line relays tor including a meter corresponding to the calling line in the metering circuit, and means for subsequently automatically closing said Vmetering circuit to actuate the selected meter. y

3.1n a telephone system, afsubscribers line having a plurality otl stations thereon, a pluralityoit'v line relays tor said` line, each relay being individual toa lstation'of said line, af pluralit'y oi" registers" -for -said line,`eachL register being individual to ay station of said line,`means actuated in response to the initiation of a call from any ot' said plurality of stations for selectively operating said line relays to associate with the calling line the register individual thereto, and means for subsequently operating said register.

t. In a telephone system, a line, two substations connected thereto, a meter for each substation of theV line, automatic switching means including a no1i-numerical switch connected to said line for extending a connection from said line to a calling station, a line relay for each subst-ation connected to said line, means operative in response to the removal of the receiver from the switch hook of the calling station for operating the line relay corresponding thereto, circuit connections completed upon the operation of said line relayl for shunting the other line relay connected to said line and for initiating the operation of the non-numerical switch,`

a relay controlled by the operation of said line relay for preparing an operating circuit for the meter corresponding to the calling line, and means for operatingsaid meter upon the response of the called subscriber.

5. In a telephone system, a party line, stations thereon, a switch hook loreach station, a meter for each station at the central `ollice, a metering circuit, a meter switching moval of the receiver from thelswitch hook Y of t-he calling station to operate the line relay corresponding thereto.

6. In a telephone system, a line terminating in a non-numerical switch, two subscribers stations connected to Said line, a switch hook for each station, a line relay for each station,a message register for each station, an operating circuit therefor, a circuit completed upon the removal of the receiver from the switch hook ol? a calling station for energizing the line relay corresponding to the calling station, a relay controlled by the line relay for including the meter corresponding to the calling station in the operating circuit, and means for subsequently automatically closing said metering circuit to operate said selected meter. Y

7. In a telephone system, a line terminating in anon-numerical switch,` twov sub-` scribers stations connected to said line, a line relay for each station, said line relays being connected to opposite sides ofthe line, a meter for each station, an operating circuit therefor, a circuit completed for one side of the line in response to the initiation of a call to operate the line relay corresponding to the calling station, a circuit completed by said relay in operating, for preventing the line relay connected to the opposite side of the line from operating, a relay controlled by the line relay for including a' mete-r corresponding to the calling line in the meter operating circuit, and means for subsequently automatically closing said operating circuit to actuate the selectedl meter. Y S. In a telephone metering system, a line, a pair of stations thereon, a relay at the central oliice for each station, each connected to one limb of the line, a meter for each station, a circuit including one side ot the line and the corresponding relay closed upon the initiation of a call from one station, a shunt circuit closed byrsaid relay about the other line relay, a metering circuit, a relay controlling the connection of said meters thereto and in turn controlled by the line relays, and means for thereafter closing said metering circuit. 1 A

l). In a telephone metering system, a line, a pair of stations thereon, a relay at the central ollice ,for each station connected to opposite limbs of the line, a circuit including one side of the line and the cor responding relay, said circuit being controlled by the switch hook contacts of the corresponding station and being closed thereby before the substation loop including the other limb of the line is closed, a shunt circuit, said circuit'being closed by said relay about the other line relay before said substation loop is closed, and a metering circuit-controlled by said relays. i lIn testimony whereof, I have signed my name to this specification this 3rd day of June 1920.

manDinner: AVERY. 

